초록 ▼

A color conversion device and method are provided in which six hues and inter-hue areas are corrected independently, and the conversion characteristics can be changed flexibly, and which does not require a large-capacity memory. Coefficients of second-order and first-order calculation terms relating

A color conversion device and method are provided in which six hues and inter-hue areas are corrected independently, and the conversion characteristics can be changed flexibly, and which does not require a large-capacity memory. Coefficients of second-order and first-order calculation terms relating to the respective hues, first-order calculation term using comparison-result data relating to the respective inter-hue areas, and product terms based on the comparison-result data and the hue data are changed so as to change the target hue or inter-hue area, without influencing other hues or inter-hue areas.

대표청구항 ▼

The invention claimed is: 1. A color conversion device for converting first color data to second color data comprising: a first calculator for generating a plurality of hue data representing achromatic components of a first color data; a code generator for generating an identification code that ind

The invention claimed is: 1. A color conversion device for converting first color data to second color data comprising: a first calculator for generating a plurality of hue data representing achromatic components of a first color data; a code generator for generating an identification code that indicates a hue of the first color data; a selector for selecting the hue data according to the identification code; a second calculator for generating calculation terms, each of which is effective for a specific hue, based on the selected hue data; a coefficient generator for providing matrix coefficients based on the identification code; and a matrix calculator that performs matrix calculation using the calculation terms and the matrix coefficients to produce the second color data. 2. The color conversion device according to claim 1, further comprising: a minimum and maximum calculator for determining a minimum value and a maximum value of the first color data, wherein the code generator generates the identification code, based on the minimum value and the maximum value. 3. A color conversion method for converting first color data to second color data, the method comprising: generating a plurality of hue data representing achromatic components of the first color data; generating an identification code that indicates a hue of the first color data; selecting the hue data according to the identification code; generating calculation terms, each of which is effective for a specific hue, based on the selected hue data; providing matrix coefficients based on the identification code; and performing matrix calculation using the calculation term and the matrix coefficients to produce the second color data. 4. The color conversion method according to claim 3, further comprising: determining a minimum value and a maximum value of the first color data, wherein the identification code is generated based on the minimum value and the maximum value.